./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcspn.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcspn.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eaca3e09b762fe94634aa0b3e6a04213782212a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:10:33,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:10:33,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:10:33,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:10:33,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:10:33,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:10:33,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:10:33,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:10:33,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:10:33,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:10:33,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:10:33,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:10:33,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:10:33,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:10:33,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:10:33,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:10:33,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:10:33,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:10:33,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:10:33,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:10:33,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:10:33,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:10:33,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:10:33,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:10:33,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:10:33,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:10:33,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:10:33,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:10:33,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:10:33,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:10:33,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:10:33,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:10:33,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:10:33,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:10:33,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:10:33,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:10:33,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:10:33,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:10:33,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:10:33,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:10:33,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:10:33,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:10:33,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:10:33,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:10:33,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:10:33,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:10:33,479 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:10:33,479 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:10:33,480 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:10:33,480 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:10:33,480 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:10:33,480 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:10:33,481 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:10:33,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:10:33,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:10:33,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:10:33,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:10:33,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:10:33,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:10:33,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:10:33,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:10:33,483 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:10:33,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:10:33,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:10:33,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:10:33,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:10:33,484 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:10:33,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:10:33,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:10:33,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:10:33,485 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:10:33,486 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:10:33,487 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaca3e09b762fe94634aa0b3e6a04213782212a5 [2020-11-30 01:10:33,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:10:33,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:10:33,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:10:33,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:10:33,814 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:10:33,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/../../sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-11-30 01:10:33,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/data/e760289d3/18c6a430e69a416188a39c1f4dde60b5/FLAG45fb6dec8 [2020-11-30 01:10:34,420 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:10:34,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-11-30 01:10:34,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/data/e760289d3/18c6a430e69a416188a39c1f4dde60b5/FLAG45fb6dec8 [2020-11-30 01:10:34,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/data/e760289d3/18c6a430e69a416188a39c1f4dde60b5 [2020-11-30 01:10:34,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:10:34,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:10:34,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:34,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:10:34,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:10:34,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fccc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34, skipping insertion in model container [2020-11-30 01:10:34,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:10:34,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:10:35,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:35,159 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:10:35,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:35,279 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:10:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35 WrapperNode [2020-11-30 01:10:35,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:35,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:35,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:10:35,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:10:35,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:35,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:10:35,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:10:35,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:10:35,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... [2020-11-30 01:10:35,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:10:35,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:10:35,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:10:35,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:10:35,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:10:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:10:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:10:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:10:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:10:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:10:35,816 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:10:35,816 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 01:10:35,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:35 BoogieIcfgContainer [2020-11-30 01:10:35,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:10:35,819 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:10:35,819 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:10:35,823 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:10:35,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:35,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:10:34" (1/3) ... [2020-11-30 01:10:35,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ae02ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:10:35, skipping insertion in model container [2020-11-30 01:10:35,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:35,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:35" (2/3) ... [2020-11-30 01:10:35,831 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ae02ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:10:35, skipping insertion in model container [2020-11-30 01:10:35,831 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:35,832 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:35" (3/3) ... [2020-11-30 01:10:35,833 INFO L373 chiAutomizerObserver]: Analyzing ICFG strcspn.i [2020-11-30 01:10:35,880 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:10:35,887 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:10:35,887 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:10:35,887 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:10:35,887 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:10:35,888 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:10:35,888 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:10:35,888 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:10:35,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:10:35,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-30 01:10:35,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:35,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:35,943 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:10:35,943 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-30 01:10:35,943 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:10:35,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:10:35,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-30 01:10:35,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:35,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:35,947 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:10:35,947 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-30 01:10:35,954 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2020-11-30 01:10:35,957 INFO L796 eck$LassoCheckResult]: Loop: 18#L510-4true call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 11#L510-1true assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 15#L511-4true assume !true; 19#L511-5true strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 16#L510-3true strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 18#L510-4true [2020-11-30 01:10:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-30 01:10:35,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:35,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082497644] [2020-11-30 01:10:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,141 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,219 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2020-11-30 01:10:36,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:36,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957902717] [2020-11-30 01:10:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:36,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957902717] [2020-11-30 01:10:36,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:36,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:10:36,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983895197] [2020-11-30 01:10:36,268 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:10:36,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:10:36,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:10:36,285 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-30 01:10:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:36,291 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-11-30 01:10:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:10:36,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-11-30 01:10:36,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-30 01:10:36,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2020-11-30 01:10:36,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-30 01:10:36,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 01:10:36,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2020-11-30 01:10:36,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:10:36,302 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-30 01:10:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2020-11-30 01:10:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:10:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:10:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-30 01:10:36,326 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-30 01:10:36,326 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-30 01:10:36,326 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:10:36,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2020-11-30 01:10:36,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-30 01:10:36,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:36,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:36,327 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:10:36,327 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:10:36,328 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 42#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 43#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 50#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 53#L510-4 [2020-11-30 01:10:36,328 INFO L796 eck$LassoCheckResult]: Loop: 53#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 48#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 49#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 44#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 45#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 52#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 53#L510-4 [2020-11-30 01:10:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2020-11-30 01:10:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:36,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648133602] [2020-11-30 01:10:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2020-11-30 01:10:36,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:36,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347931166] [2020-11-30 01:10:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2020-11-30 01:10:36,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:36,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362746153] [2020-11-30 01:10:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:36,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:36,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:36,653 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-30 01:10:37,202 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-11-30 01:10:37,365 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 01:10:37,379 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:37,383 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:37,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:37,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:37,384 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:37,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:37,389 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:37,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:37,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration2_Lasso [2020-11-30 01:10:37,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:37,389 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:37,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:37,911 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-30 01:10:38,082 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-11-30 01:10:38,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:38,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:38,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:38,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:38,773 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:38,778 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:38,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:38,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:38,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:38,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:38,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:38,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:38,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:38,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:38,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:38,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:38,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:38,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:38,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:38,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:38,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:38,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:38,859 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:38,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:38,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:38,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:38,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:38,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:38,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:38,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:38,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:38,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:38,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:38,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:38,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:38,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:38,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:38,931 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:38,931 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:38,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:38,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:38,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:38,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:38,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:38,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:38,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:38,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:38,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:38,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:39,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,043 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:39,053 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,076 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:39,083 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:39,115 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:39,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:39,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,186 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:39,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:39,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:39,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:39,271 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:39,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,304 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:39,304 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:39,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:39,351 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:39,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:39,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:39,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:39,372 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:39,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:39,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:39,439 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-30 01:10:39,439 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:39,447 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:39,491 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:10:39,491 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:39,492 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1, ULTIMATE.start_strcspn_~s.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1 - 1*ULTIMATE.start_strcspn_~s.offset Supporting invariants [] [2020-11-30 01:10:39,672 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2020-11-30 01:10:39,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:10:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:10:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:39,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:10:39,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:39,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-30 01:10:39,815 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-11-30 01:10:39,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2020-11-30 01:10:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:39,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:10:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 01:10:39,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 01:10:39,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:39,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 01:10:39,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:39,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 01:10:39,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:39,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-30 01:10:39,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:39,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2020-11-30 01:10:39,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:10:39,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:10:39,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2020-11-30 01:10:39,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:39,902 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 01:10:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2020-11-30 01:10:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:10:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:10:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-30 01:10:39,904 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 01:10:39,904 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 01:10:39,904 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:10:39,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-11-30 01:10:39,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:39,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:39,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:39,905 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:10:39,905 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:39,906 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 192#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 193#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 204#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 207#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 200#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 201#L511-4 [2020-11-30 01:10:39,906 INFO L796 eck$LassoCheckResult]: Loop: 201#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 194#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 195#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 205#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 201#L511-4 [2020-11-30 01:10:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:39,906 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2020-11-30 01:10:39,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:39,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52022918] [2020-11-30 01:10:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:39,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:39,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:39,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2020-11-30 01:10:39,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:39,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615644139] [2020-11-30 01:10:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:39,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:40,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2020-11-30 01:10:40,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:40,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222720502] [2020-11-30 01:10:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:40,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:40,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,067 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:40,627 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-11-30 01:10:40,780 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-30 01:10:40,783 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:40,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:40,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:40,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:40,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:40,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:40,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:40,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:40,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration3_Lasso [2020-11-30 01:10:40,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:40,783 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:40,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:40,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,211 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-11-30 01:10:41,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:41,920 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:41,921 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:41,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:41,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:41,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:41,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:41,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:41,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:41,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:41,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:41,943 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:41,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:41,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:41,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:41,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:41,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:41,999 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:41,999 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:42,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:42,077 INFO L443 ModelExtractionUtils]: Simplification made 21 calls to the SMT solver. [2020-11-30 01:10:42,077 INFO L444 ModelExtractionUtils]: 25 out of 46 variables were initially zero. Simplification set additionally 17 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:42,123 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:10:42,125 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:10:42,125 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:42,126 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, ULTIMATE.start_strcspn_~reject.offset, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2) = -1*ULTIMATE.start_strcspn_~i~0 - 1*ULTIMATE.start_strcspn_~reject.offset + 1*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2 Supporting invariants [] [2020-11-30 01:10:42,229 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2020-11-30 01:10:42,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:10:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:42,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:42,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:10:42,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:42,305 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:10:42,306 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:10:42,331 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 51 transitions. Complement of second has 5 states. [2020-11-30 01:10:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:10:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-11-30 01:10:42,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-30 01:10:42,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:42,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-30 01:10:42,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:42,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-30 01:10:42,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:42,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2020-11-30 01:10:42,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:42,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2020-11-30 01:10:42,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:10:42,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:10:42,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2020-11-30 01:10:42,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:42,338 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-30 01:10:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2020-11-30 01:10:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-30 01:10:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 01:10:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-30 01:10:42,344 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 01:10:42,344 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 01:10:42,344 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:10:42,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2020-11-30 01:10:42,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:42,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:42,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:42,350 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:42,350 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:42,351 INFO L794 eck$LassoCheckResult]: Stem: 376#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 370#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 371#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 381#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 384#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 379#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 380#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 393#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 392#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 387#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 388#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 377#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 378#L511-4 [2020-11-30 01:10:42,351 INFO L796 eck$LassoCheckResult]: Loop: 378#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 372#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 373#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 382#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 378#L511-4 [2020-11-30 01:10:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:42,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2020-11-30 01:10:42,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:42,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131182118] [2020-11-30 01:10:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:42,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:42,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:42,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2020-11-30 01:10:42,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:42,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895073732] [2020-11-30 01:10:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:42,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:42,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:42,439 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:42,447 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2020-11-30 01:10:42,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:42,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63015061] [2020-11-30 01:10:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:42,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63015061] [2020-11-30 01:10:42,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416712052] [2020-11-30 01:10:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:42,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 01:10:42,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:42,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-30 01:10:42,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:10:42,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:10:42,821 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:10:42,821 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-30 01:10:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:42,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:10:42,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-30 01:10:42,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767881080] [2020-11-30 01:10:42,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:42,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:10:42,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:10:42,905 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 8 states. [2020-11-30 01:10:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:42,996 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-11-30 01:10:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:10:42,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2020-11-30 01:10:42,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:43,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2020-11-30 01:10:43,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-30 01:10:43,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-30 01:10:43,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2020-11-30 01:10:43,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:43,001 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-30 01:10:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2020-11-30 01:10:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-30 01:10:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 01:10:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-30 01:10:43,004 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-30 01:10:43,004 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-30 01:10:43,004 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:10:43,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2020-11-30 01:10:43,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:43,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:43,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:43,006 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:43,006 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:43,007 INFO L794 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 502#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 503#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 513#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 517#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 511#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 512#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 506#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 507#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 515#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 516#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 522#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 521#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 518#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 519#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 509#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 510#L511-4 [2020-11-30 01:10:43,007 INFO L796 eck$LassoCheckResult]: Loop: 510#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 504#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 505#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 514#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 510#L511-4 [2020-11-30 01:10:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:43,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2020-11-30 01:10:43,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:43,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015854034] [2020-11-30 01:10:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,045 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:43,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2020-11-30 01:10:43,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:43,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610357095] [2020-11-30 01:10:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2020-11-30 01:10:43,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:43,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010735502] [2020-11-30 01:10:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:43,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:43,132 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:43,930 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 140 [2020-11-30 01:10:44,192 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-30 01:10:44,194 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:44,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:44,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:44,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:44,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:44,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:44,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:44,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:44,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration5_Lasso [2020-11-30 01:10:44,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:44,194 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:44,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:44,884 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-11-30 01:10:45,074 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-11-30 01:10:45,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:45,424 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-11-30 01:10:45,809 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-11-30 01:10:46,022 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:46,023 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,033 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:46,057 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,093 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,119 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,122 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,150 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,174 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,180 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,203 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:46,219 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,246 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,270 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,309 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,361 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,423 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,445 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:46,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:46,448 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:46,456 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,480 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:46,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,516 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,516 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:46,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:46,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,585 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2020-11-30 01:10:46,585 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-30 01:10:46,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,675 INFO L401 nArgumentSynthesizer]: We have 136 Motzkin's Theorem applications. [2020-11-30 01:10:46,676 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-30 01:10:46,802 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:46,844 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,848 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,848 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,852 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:46,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,897 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,897 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:46,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:46,946 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:46,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:46,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:46,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:46,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:46,959 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:46,959 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:46,973 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:47,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:47,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:47,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:47,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:47,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:47,016 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:47,016 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:47,020 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:47,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:47,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:47,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:47,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:47,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:47,068 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:47,068 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:47,074 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:47,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:47,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:47,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:47,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:47,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:47,132 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:47,132 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:47,156 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:47,220 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-11-30 01:10:47,220 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:47,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:10:47,225 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:10:47,225 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:47,225 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3) = -2*ULTIMATE.start_strcspn_~i~0 + 3*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3 Supporting invariants [] [2020-11-30 01:10:47,369 INFO L297 tatePredicateManager]: 32 out of 35 supporting invariants were superfluous and have been removed [2020-11-30 01:10:47,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:10:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:47,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:10:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:47,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:10:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:47,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-30 01:10:47,566 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-30 01:10:47,618 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-11-30 01:10:47,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:10:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-30 01:10:47,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-30 01:10:47,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:47,619 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:47,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:10:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:47,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:10:47,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:47,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-30 01:10:47,844 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-30 01:10:47,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-11-30 01:10:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:10:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-30 01:10:47,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-30 01:10:47,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:47,904 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:47,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:47,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:10:47,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:48,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:10:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:48,072 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-30 01:10:48,072 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-30 01:10:48,239 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 56 states and 63 transitions. Complement of second has 11 states. [2020-11-30 01:10:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-30 01:10:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:10:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2020-11-30 01:10:48,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-30 01:10:48,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:48,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2020-11-30 01:10:48,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:48,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2020-11-30 01:10:48,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:48,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2020-11-30 01:10:48,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:48,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2020-11-30 01:10:48,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:10:48,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 01:10:48,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2020-11-30 01:10:48,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:48,246 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-11-30 01:10:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2020-11-30 01:10:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-11-30 01:10:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:10:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-30 01:10:48,250 INFO L714 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-30 01:10:48,250 INFO L594 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-30 01:10:48,250 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:10:48,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2020-11-30 01:10:48,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:48,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:48,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:48,252 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:10:48,252 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:48,252 INFO L794 eck$LassoCheckResult]: Stem: 1039#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1033#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1034#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1044#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1050#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1053#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1064#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1061#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1063#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1062#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1060#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1059#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1058#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1048#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1049#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1042#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1043#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1037#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1038#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1046#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1047#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1065#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1054#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1055#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1056#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1040#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1041#L511-4 [2020-11-30 01:10:48,252 INFO L796 eck$LassoCheckResult]: Loop: 1041#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1035#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1036#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1045#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1041#L511-4 [2020-11-30 01:10:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2020-11-30 01:10:48,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:48,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751085521] [2020-11-30 01:10:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,293 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2020-11-30 01:10:48,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:48,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924038855] [2020-11-30 01:10:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,306 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:48,307 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2020-11-30 01:10:48,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:48,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602070481] [2020-11-30 01:10:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:48,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:48,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:49,472 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 216 DAG size of output: 172 [2020-11-30 01:10:49,660 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-11-30 01:10:49,669 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:49,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:49,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:49,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:49,669 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:49,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:49,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:49,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:49,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration6_Lasso [2020-11-30 01:10:49,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:49,670 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:49,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:49,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,308 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2020-11-30 01:10:50,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:50,705 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-11-30 01:10:50,787 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 01:10:51,044 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-30 01:10:52,389 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-11-30 01:10:52,427 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:52,427 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:52,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:52,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,533 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,533 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,559 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,587 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,613 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:52,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:52,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:52,640 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,668 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,695 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,753 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,754 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,764 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,785 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,821 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,855 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,860 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:10:52,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:52,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:52,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:52,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:52,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:52,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:52,917 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:52,940 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-30 01:10:52,940 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:52,943 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:52,945 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:10:52,945 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:52,945 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -2*ULTIMATE.start_strcspn_~i~0 + 5*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2020-11-30 01:10:53,091 INFO L297 tatePredicateManager]: 35 out of 36 supporting invariants were superfluous and have been removed [2020-11-30 01:10:53,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:10:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:53,278 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-30 01:10:53,278 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-30 01:10:53,326 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-11-30 01:10:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:10:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-30 01:10:53,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-30 01:10:53,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:53,328 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:53,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:53,508 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-30 01:10:53,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-30 01:10:53,570 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-11-30 01:10:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:10:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-30 01:10:53,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-30 01:10:53,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:53,573 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:10:53,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:53,765 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-30 01:10:53,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-30 01:10:53,926 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 66 states and 74 transitions. Complement of second has 13 states. [2020-11-30 01:10:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-30 01:10:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:10:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2020-11-30 01:10:53,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-30 01:10:53,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:53,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 30 letters. Loop has 4 letters. [2020-11-30 01:10:53,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:53,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 8 letters. [2020-11-30 01:10:53,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:53,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 74 transitions. [2020-11-30 01:10:53,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:53,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 52 states and 57 transitions. [2020-11-30 01:10:53,934 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:10:53,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 01:10:53,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 57 transitions. [2020-11-30 01:10:53,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:53,935 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-30 01:10:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 57 transitions. [2020-11-30 01:10:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-11-30 01:10:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:10:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-11-30 01:10:53,939 INFO L714 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-30 01:10:53,939 INFO L594 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-30 01:10:53,939 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:10:53,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 52 transitions. [2020-11-30 01:10:53,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:53,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:53,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:53,941 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-30 01:10:53,941 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:53,941 INFO L794 eck$LassoCheckResult]: Stem: 1711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1705#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1706#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1716#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1724#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1727#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1751#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1748#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1750#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1749#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1747#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1746#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1745#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1744#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1728#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1714#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1715#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1737#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1738#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1718#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1719#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1734#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1726#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1722#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1723#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1743#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1720#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1721#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1741#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1740#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1739#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1733#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1732#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1731#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1729#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1712#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1713#L511-4 [2020-11-30 01:10:53,942 INFO L796 eck$LassoCheckResult]: Loop: 1713#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1707#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1708#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1717#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1713#L511-4 [2020-11-30 01:10:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash -43865248, now seen corresponding path program 6 times [2020-11-30 01:10:53,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487308605] [2020-11-30 01:10:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:54,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,015 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 5 times [2020-11-30 01:10:54,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:54,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018631985] [2020-11-30 01:10:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:54,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:54,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash -345387609, now seen corresponding path program 7 times [2020-11-30 01:10:54,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:54,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395320726] [2020-11-30 01:10:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:54,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:54,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:54,104 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:55,531 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 263 DAG size of output: 201 [2020-11-30 01:10:55,746 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-11-30 01:10:55,749 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:55,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:55,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:55,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:55,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:55,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:55,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:55,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration7_Lasso [2020-11-30 01:10:55,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:55,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:55,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,408 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2020-11-30 01:10:56,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 01:11:05,740 WARN L193 SmtUtils]: Spent 8.76 s on a formula simplification. DAG size of input: 298 DAG size of output: 150 [2020-11-30 01:11:05,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:05,946 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:05,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:05,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:05,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:05,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:05,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:05,973 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:05,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:05,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:06,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:06,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:06,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:06,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:06,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:06,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:06,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:11:06,017 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:06,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:06,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:06,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:06,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:06,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:06,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:06,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:11:06,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:06,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:06,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:06,084 INFO L203 nArgumentSynthesizer]: 108 stem disjuncts [2020-11-30 01:11:06,084 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-30 01:11:06,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:06,665 INFO L401 nArgumentSynthesizer]: We have 904 Motzkin's Theorem applications. [2020-11-30 01:11:06,665 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-30 01:11:07,712 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:07,745 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:07,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:07,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:07,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:07,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:07,749 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:07,749 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:11:07,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:07,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:07,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:07,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:07,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:07,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:07,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:07,814 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:11:07,817 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:07,841 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:07,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:07,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:07,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:07,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:07,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:11:07,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:11:07,887 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:11:07,946 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-30 01:11:07,946 INFO L444 ModelExtractionUtils]: 23 out of 55 variables were initially zero. Simplification set additionally 28 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b539f24-fbf8-4a02-aadb-bddbb9b27989/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:07,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:07,952 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-30 01:11:07,952 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:11:07,953 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 Supporting invariants [1*ULTIMATE.start_strcspn_#in~s.offset >= 0] [2020-11-30 01:11:08,135 INFO L297 tatePredicateManager]: 43 out of 47 supporting invariants were superfluous and have been removed [2020-11-30 01:11:08,142 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:11:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:08,317 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-30 01:11:08,317 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-30 01:11:08,385 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-11-30 01:11:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:11:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-30 01:11:08,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-30 01:11:08,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:08,389 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:11:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:08,556 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-30 01:11:08,556 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-30 01:11:08,677 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-11-30 01:11:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:11:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-30 01:11:08,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-30 01:11:08,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:08,680 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:11:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:08,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:11:08,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:08,880 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-30 01:11:08,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-30 01:11:09,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 80 states and 91 transitions. Complement of second has 9 states. [2020-11-30 01:11:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:11:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2020-11-30 01:11:09,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-30 01:11:09,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:09,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 40 letters. Loop has 4 letters. [2020-11-30 01:11:09,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:09,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 8 letters. [2020-11-30 01:11:09,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:09,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 91 transitions. [2020-11-30 01:11:09,023 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:11:09,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 0 states and 0 transitions. [2020-11-30 01:11:09,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:11:09,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:11:09,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:11:09,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:11:09,024 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:09,024 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:09,024 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:09,024 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 01:11:09,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:11:09,025 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:11:09,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:11:09,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:11:09 BoogieIcfgContainer [2020-11-30 01:11:09,031 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:11:09,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:11:09,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:11:09,032 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:11:09,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:35" (3/4) ... [2020-11-30 01:11:09,035 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:11:09,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:11:09,036 INFO L168 Benchmark]: Toolchain (without parser) took 34278.29 ms. Allocated memory was 88.1 MB in the beginning and 327.2 MB in the end (delta: 239.1 MB). Free memory was 56.9 MB in the beginning and 230.5 MB in the end (delta: -173.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:09,037 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:09,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.10 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 36.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:09,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.64 ms. Allocated memory is still 88.1 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:09,038 INFO L168 Benchmark]: Boogie Preprocessor took 77.26 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 34.9 MB in the beginning and 84.6 MB in the end (delta: -49.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:09,038 INFO L168 Benchmark]: RCFGBuilder took 390.67 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 71.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:09,038 INFO L168 Benchmark]: BuchiAutomizer took 33211.96 ms. Allocated memory was 107.0 MB in the beginning and 327.2 MB in the end (delta: 220.2 MB). Free memory was 70.8 MB in the beginning and 231.6 MB in the end (delta: -160.7 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:09,039 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 327.2 MB. Free memory was 231.6 MB in the beginning and 230.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:09,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.10 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 36.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.64 ms. Allocated memory is still 88.1 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.26 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 34.9 MB in the beginning and 84.6 MB in the end (delta: -49.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 390.67 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 71.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 33211.96 ms. Allocated memory was 107.0 MB in the beginning and 327.2 MB in the end (delta: 220.2 MB). Free memory was 70.8 MB in the beginning and 231.6 MB in the end (delta: -160.7 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.83 ms. Allocated memory is still 327.2 MB. Free memory was 231.6 MB in the beginning and 230.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (in_len)] + -1 * s and consists of 4 locations. One deterministic module has affine ranking function -1 * i + -1 * reject + unknown-#length-unknown[reject] and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 3 * unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 8 locations. One nondeterministic module has affine ranking function -2 * i + 5 * unknown-#length-unknown[reject] and consists of 9 locations. One nondeterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 33.1s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 29.9s. Construction of modules took 0.2s. Büchi inclusion checks took 2.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 134 SDtfs, 325 SDslu, 164 SDs, 0 SdLazy, 228 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital268 mio100 ax100 hnf99 lsp96 ukn77 mio100 lsp44 div100 bol100 ite100 ukn100 eq187 hnf87 smp97 dnf1547 smp67 tf100 neg89 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1633ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 108 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 904 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...